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a year agoContributor-Level 10
According to Newton's third law of motion, every action has an equal and opposite reaction. These action-reaction forces act on different objects. The real-world example is a person walking, when the person takes a step forward, their foot pushes backward on the ground, the ground also exerts an equal and opposite force forward on the person's foot and the person is propelled forward due to the reaction force from the ground. Another real-world example is the rocket launch which expels hot gases downward (action), the gases exert an equal and opposite upward force (reaction) on the rocket and cause upward acceleration. It is an importa
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a year agoContributor-Level 10
Newton's First Law of Motion is also known as the Law of Inertia. It states that unless acted upon by an unbalanced force, the object in motion stays in motion in the same direction and with the same speed and the object at rest stays at rest. The fundamental concept of inertia is introduced by the first law of Newton which refers to the resistance an object shows to changes in its state of motion. It is an inherent tendency of an object. Inertia is directly proportional to an object's mass which implies that a massive object has greater inertia and will require more force for velocity changes.
Newton's First Law of Motion implies that
New question posted
a year agoNew answer posted
a year agoContributor-Level 10
When two waves of the same amplitude, frequency and speed travel in opposite directions and collide with each other, then a standing wave is formed. It is usually seen in the bounded medium, like a string fixed at both ends. It is different from the travelling waves and does not appear to move along the medium. At fixed locations, it forms specific points called nodes (with zero displacement) and antinodes (with maximum displacement). It is an important concept in understanding musical instruments, resonance and wave behaviour in closed and open pipes. The standing waves help in visualizing how energy can be stored in waveforms.
New answer posted
a year agoContributor-Level 10
According to the principle of superposition, when two or more waves overlap in space, due to each individual wave, at any point the displacement is the vector sum of the displacements. The principle of superposition also explains phenomena like interference where waves combine to amplify or cancel out each other. It can happen in both ways - constructively or destructively. In real life, the superposition can be seen in the noise cancellation technologies, sound beats and the colourful patterns created by overlapping water waves. The principle is the fundamental concept for understanding wave behaviour in acoustics, optics and even qua
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a year agoContributor-Level 10
Mechanical waves are of two types - transverse waves and longitudinal waves. It requires a medium to travel. The medium particles vibrate perpendicular to the direction of wave propagation in the case of transverse waves. However, the particles oscillate parallel to the wave direction in the longitudinal waves as seen in sound waves. The sound waves propagate by exerting forces by the neighbouring particles. While the wave particles stay close to the original position, the energy is passed on through the interactions among the adjacent particles.
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a year agoContributor-Level 10
A disturbance that travels through the space or medium transferring energy without the net movement of particles is called a wave. Rather than moving along with the wave, the particles of the medium only oscillate about their mean position in a wave motion. The wave is fundamentally different as compared to the particle motion where the particles travel from one place to another. In a sound wave, the air molecules do not travel to the sound, they vibrate back and forth. The concept of wave motion is one of the most important concepts in knowing how energy is transmitted in various forms including light, sound and water waves.
New answer posted
a year agoNew answer posted
a year agoContributor-Level 10
The main difference between the real and ideal gases is with respect to the kinetic theory. The ideal gas follows assumptions of the kinetic theory but the real gases do not follow it, especially when the temperature is low and there is high pressure.
The following points are applicable in the case of real gases:
- Real gas molecules do have finite volume.
- In such cases, intermolecular forces such as Van there Waals forces become significant.
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